I bought this system about 3 years back, and I have taken great care of it. All the speakers, receiver, and subwoofer are in outstanding conditions and work well.Specifications: Sony SS-F6000 Speaker System - Floor Standing, 6.5" Woofer, 180 Watts Max, PairFrequency Response: 40 - 50,000 HzImpedance: 8 OhmsPower Requirements: 180WQuantity (Packaged): 2Quantity of Tweeters: 1Sensitivity: 89 dBSpeaker Terminal Type: Binding PostWoofer Size(s): 61/2" (16cm) x 2Quantity of Woofer(s): 2Mid Range Size(s): 31/4" (8 cm)Tweeter Size: 1" (2.5 cm)DimensionsWeight: 26 lb, 13 oz (12.2 kg) eachMeasurements: 87/16 x 373/8 x 101/4" (215 x 950x 200mm) each --------------------------------------------------------------------------------------------------------------------------- Sony SS-F5000 3 Way 150 watt Floor Standing Speakers, Pair, BlackFrequency Response 45 - 50,000 HzImpedance 8 OhmsMid Range Size(s) 3-1/4" Midrange DriverPower Requirements 150WSensitivity 88 dBSpeaker Terminal Type Binding PostTweeter Size 1" (2.5 cm)Woofer Size(s) 8" WooferSpeaker Design 3-Way Bass ReflexConnector Type Binding PostDimensions (W x H x D) 9.5 x 33.5 x 10.38" (240 x 850 x 263cm)Weight 24.9 lbs (11.3 kg)--------------------------------------------------------------------------------------------------------------------------- Sony Performance Line 100 Watt Powered Subwoofer - SA-W2500SONYModelSA-W2500Woofer Size(s): 9-13/16" (25cm) Bass Driver(s): Advanced Bass Reflex Design; 8" Long-Throw DriverPower RatingWoofer Power Handling: 100W (6 ohms, 80 Hz, 10 % THD)Frequency Response 28Hz - 200HzConnectorsSpeaker Terminal Type: Line In Line Level Input(s): 1 (Rear) Speaker Level Input(s): 1 (Rear)Power Requirements: 120V A/C, 60Hz (Subwoofer) Power Consumption (in Operation): 70W (Subwoofer) Power Consumption (in Standby): less then 0.3 W (Subwoofer)Dimensions & & WeightWeight (Approx.): 22 lbs.Dimensions (Approx.): 11.44" x 13.75" x 16.38"100 Watt Amplified Subwoofer (6 ohms, 80 Hz, 10 % THD)10" Mica Reinforced Cellular WooferMotion Feed Back TechnologyType: Video Shielded --------------------------------------------------------------------------------------------------------------------------- Sony SS-CN550H Dual 51/8" 2-Way 150-Watts Center SpeakerMaximum Amplifier Power 150wImpedance 8 OhmsSensitivity (0 VU) 89 dbFrequency Response 85-50kHzHigh Frequency Driver 1" Nano-Fine driverMid Frequency Driver N/ALow Frequency Driver Dual 5-1/4" driversShielded YesPorted YesEnclosure Bass ReflexTerminals Line-level and speaker-level inputs, with Line output for additional subwooferBuilt-in Amplifier NoFinish and Grille Color Black/ SilverDimensions (WxHxD) 17 x 6-3/4 x 8-1/3" (430 x 170 x 215mm)Weight 12.5 lbs. (5.7 kg)--------------------------------------------------------------------------------------------------------------------------- Sony STR-DH510 5.1-Channel Home Theater ReceiverAuto Standby: YesDisplay: 8 Seg. fluorescentPanel: Mold, BlackPower Consumption: 230WPower Requirement: 120V 60HzPower Stand By: 0.3 WSleep Timer: YesAuto Tuning: YesA/V In/Out (S-Video I/O): Including Front AV: 2/1 (0/0) + V1/0Analog Audio In (Inc TELEVISION CEC)/ Out (excl. tuner)/ TELEVISION (CEC): 2/0/YesCoaxial: 1/0Component Video In/Out (Pass through): 2/1DIGITAL MEDIA PORT: 1Digital Input Assign: YesHDMI In/Out: (Front input): 3/1Monitor Out (S-Video Out): 1(0)Opt. In/Out/TV(CEC): incl Front input & & TELEVISION (CEC): 2/0/YesPre Out: SW x1Receiver Dimension (WxHxD): 17" x 6-1/4" x 12-3/4"Receiver Weight (lbs): 16 lb 6 oz